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Titolo:
ECTOPIC EXPRESSION OF A NOVEL MYB GENE MODIFIES THE ARCHITECTURE OF THE ARABIDOPSIS INFLORESCENCE
Autore:
KIRIK V; KOLLE K; WOHLFARTH T; MISERA S; BAUMLEIN H;
Indirizzi:
INST PFLANZENGENET & KULTURPFLANZENFORSCH,CORRENSSTR 3 D-06466 GATERSLEBEN GERMANY INST PFLANZENGENET & KULTURPFLANZENFORSCH D-06466 GATERSLEBEN GERMANY
Titolo Testata:
Plant journal
fascicolo: 6, volume: 13, anno: 1998,
pagine: 729 - 742
SICI:
0960-7412(1998)13:6<729:EEOANM>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
DNA-BINDING; TRANSCRIPTIONAL ACTIVATORS; BETA-GLUCURONIDASE; LATE EMBRYOGENESIS; PETUNIA-HYBRIDA; THALIANA; PROTEINS; MUTANTS; PLANTS; SELECTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
55
Recensione:
Indirizzi per estratti:
Citazione:
V. Kirik et al., "ECTOPIC EXPRESSION OF A NOVEL MYB GENE MODIFIES THE ARCHITECTURE OF THE ARABIDOPSIS INFLORESCENCE", Plant journal, 13(6), 1998, pp. 729-742

Abstract

The Arabidopsis thaliana mutants fus3 lec1 and abi3 have pleiotropic defects during late embryogenesis. Mutant embryos fail to enter the maturation programme and initiate a vegetative germination pathway instead. Screening for genes which are differentially expressed in the fus3mutant of Arabidopsis resulted in the isolation of several members ofthe MYB family. MYB domain proteins in plants represent an extended gene family of transcription factors, suggesting their participation ina variety of plant specific cellular functions. Here, the authors describe one of these genes, designated AtMYB13, representing a novel member of the MYB gene family. The structure of the gene as well as its genomic organisation and localisation are reported. The expression of the gene is regulated by dehydration, exogenous abscisic acid, light and wounding. A chimeric AtMYB13 promoter/GUS gene is tissue-specifically expressed in transgenic Arabidopsis plants. The GUS staining was predominantly detected in the shoot apex zone and at the basis of developing flowers. In addition, the AtMYB13 gene promoter is active at branching points of the inflorescence. Furthermore, ectopic expression of the AtMYB13 gene has a characteristic impact on the architecture of theinflorescence leading to peculiar hook structures at pedicel branching points. In addition, some transgenic plants exhibit a reversed orderof first flowers and axillary buds. These data suggest a function of the AtMYB13 gene product in linking shoot morphogenic activity with environmental as well as intrinsic signals.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/01/21 alle ore 02:38:55